State in React: interview exercises
State in React: 5 test-checked interview exercises (useState, A controlled input), each beside a worked example, with tests as you go. Free.
- useState
- A controlled input
- Updating arrays immutably
- Lifting state up
- Updates built from the previous state
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.